WWHW40 PHFO 211356

WSWHFO



URGENT - WINTER WEATHER MESSAGE

National Weather Service Honolulu HI

356 AM HST Sat Mar 21 2026



...A WINTER STORM WATCH IS IN EFFECT FROM 6 PM HST THIS EVENING TO 6 

PM HST SUNDAY FOR THE BIG ISLAND SUMMIMTS ABOVE 12000 FEET...



.A kona storm is likely to bring heavy snow and strong winds to the 

summits beginning this evening and lasting through Sunday afternoon.



HIZ028-220300-

/O.CON.PHFO.WS.A.0004.260322T0400Z-260323T0400Z/

Big Island Summits-

356 AM HST Sat Mar 21 2026



...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH 

SUNDAY AFTERNOON...



* WHAT...Heavy snow possible. Total snow accumulations up to 10 

  inches possible. Winds could gust as high as 70 mph. Light snow 

  may linger Sunday night into Monday.



* WHERE...Big Island Summits of Mauna Kea and Mauna Loa.



* WHEN...From this evening through Sunday afternoon.



* IMPACTS...Travel could be very difficult to impossible. Blowing 

  snow will significantly reduce visibility at times, with periods 

  of zero visibility.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Winter Storm Watch means there is potential for significant snow 

or ice accumulations that may impact the summits. Anyone planning 

travel to the summits, including hikers and campers, should monitor 

the latest forecasts and consider postponing their trip until 

improved weather returns.



&&



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RCB